County annual report · FIPS 17117
2025 Macoupin County, IL Power Outage Report
In 2025, customers in Macoupin County, IL went without power for an average of 8.3 hours, a total of 128K customer-hours (Illinois average 2.5 hours). That ranks 21st worst of 102 Illinois counties and 979th of 3,000 nationally.
Compared with IL, the US and 2024
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Macoupin County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 15, 2025 17:00 | May 18, 2025 15:45 | 2d 22h | 4,693 | 50K |
| 2 | June 9, 2025 13:15 | June 11, 2025 20:30 | 2d 7h | 1,057 | 3,248 |
| 3 | May 19, 2025 02:00 | June 6, 2025 16:30 | 18d 14h | 988 | 5,081 |
| 4 | July 21, 2025 02:45 | July 21, 2025 16:15 | 13h 30m | 981 | 7,573 |
| 5 | June 20, 2025 20:15 | July 1, 2025 19:15 | 10d 23h | 941 | 6,668 |
| 6 | December 26, 2025 14:30 | December 26, 2025 20:45 | 6h 15m | 933 | 492 |
| 7 | March 14, 2025 19:45 | March 17, 2025 21:15 | 3d 1h | 917 | 9,957 |
| 8 | October 18, 2025 19:15 | October 19, 2025 00:00 | 4h 45m | 780 | 1,861 |
| 9 | September 12, 2025 21:45 | September 15, 2025 01:15 | 2d 3h | 751 | 3,902 |
| 10 | March 11, 2025 13:00 | March 11, 2025 20:30 | 7h 30m | 584 | 4,298 |
Outage episodes by size in 2025: 29 reached 100+ customers, 2 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Macoupin County reported on EIA Form 861 for 2025, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Ameren Illinois Company | 2024 | 3.7 hrs | 1.13 | 2.0 hrs | 0.91 |
| Southwestern Electric Coop Inc - (IL) | 2024 | 5.1 hrs | 2.21 | 4.4 hrs | 1.78 |
| Rural Electric Conven Coop | 2018 | 4.0 hrs | 1.91 | 2.0 hrs | 1.84 |
| Ameren | - | - | - | - | - |
| Illinois Rural Electric Coop | - | - | - | - | - |
| M J M Electric Cooperative Inc | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Illinois's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 15,453 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Macoupin County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Macoupin County, IL annual power outage report, 2025, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2025/illinois/macoupin-county